EP1156838A1 - Wound dressing - Google Patents
Wound dressingInfo
- Publication number
- EP1156838A1 EP1156838A1 EP00915622A EP00915622A EP1156838A1 EP 1156838 A1 EP1156838 A1 EP 1156838A1 EP 00915622 A EP00915622 A EP 00915622A EP 00915622 A EP00915622 A EP 00915622A EP 1156838 A1 EP1156838 A1 EP 1156838A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- wound
- foam layer
- foam
- wound dressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010410 layer Substances 0.000 claims abstract description 88
- 239000006260 foam Substances 0.000 claims abstract description 28
- 230000002745 absorbent Effects 0.000 claims abstract description 18
- 239000002250 absorbent Substances 0.000 claims abstract description 18
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000012790 adhesive layer Substances 0.000 claims abstract description 3
- 239000011148 porous material Substances 0.000 claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 206010052428 Wound Diseases 0.000 description 35
- 208000027418 Wounds and injury Diseases 0.000 description 35
- 239000012530 fluid Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 239000006261 foam material Substances 0.000 description 7
- 239000002657 fibrous material Substances 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 210000000416 exudates and transudate Anatomy 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 206010048625 Skin maceration Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000002803 maceration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000002984 plastic foam Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0203—Adhesive bandages or dressings with fluid retention members
Definitions
- the present invention relates to a wound dressing that includes an hydrophilic foam layer that is covered on one side with a liquid permeable adhesive layer.
- wound dressings that include a pad which absorbs surplus fluid exuding from the wound.
- the fluid, or semifluid, absorbed by the pad spreads laterally in the dressing and may reach the skin which lies around the edges of the wound and which then comes into contact with the fluid.
- This fluid contact is potentially harmful to the skin, as it may result in maceration of the skin or damage the skin in some other way. This is a highly common complication in the treatment chronic wounds and sores.
- An object of the present invention is to provide a wound dressing with which the risk of skin maceration is reduced and with which that part of the wound pad that lies proximal to the wound is kept free from fluid until the pad becomes saturated.
- Another object of the invention is to provide a two-layer dressing that includes a drainable first layer of hydrophilic foam that lies nearest the wound. This layer can be left on the wound, or sore, over a long period of time whereas a second layer that functions to drain the first layer can be changed at regular intervals.
- a wound dressing which comprises an hydrophilic foam layer that is coated with a layer of liquid-permeable adhesive on one side, wherein the dressing is characterized by an absorbent layer disposed on the foam layer on the opposite side of the adhesive coating and which has the ability to drain the foam layer by capillary action; and in that the dressing includes means for ensuring that good contact is obtained between the absorbent layer and the foam layer.
- the capillary forces in the layer of absorbent material act to empty the foam layer of fluid, therewith essentially eliminating the risk of skin maceration. This enables the foam layer to remain on the wound bed for a longer period of time without needing to be changed.
- the hydrophilic foam layer has a maximum thickness of 2 mm and a mean cell size of 300-500 ⁇ m.
- the adhesive coating is comprised of a soft, sticky, hydrophobic elastomer.
- the invention also relates to a wound dressing intended for co-action with an absorbent body, wherein the dressing is characterized by an hydrophilic foam layer which has on one side an adhesive coating that extends over the whole of its surface without blocking or clogging the pores of said layer, wherein said layer has a thickness of at most 2 mm and a mean cell size of 300-500 ⁇ m.
- Figure 1 is a schematic perspective view of a part of a wound dressing according to a first embodiment of the invention
- Figure 1A shows part of the dressing in Figure 1 in larger scale
- t Figure 2 is an electron microscope image of the pore structure in the absorbent foam material included in the wound dressing of Figure 1.
- the wound dressing illustrated in Figure 1 includes a wound pad 1 that comprises two layers 2, 3.
- the bottom layer 3 is comprised of an hydrophilic polyurethane foam having open cells.
- the underside of the foam layer which faces towards the wound when worn, is provided with a coating 4 of soft, sticky, hydrophobic elastomeric material, preferably silica gel.
- the gel layer is disposed so that part of the walls of the open cells or pores 5 of the foam material that open onto the gel coated side will also be coated with gel.
- the gel layer 3 does not close the pores, but merely covers a part of the walls of some of the pores of the foam facing towards the wound, excess wound fluid or exudate is drawn up into the foam material and absorbed therein.
- a method of producing such a gel layer is described in WO 97742985 Al, to which reference is made for a closer understanding of the method of manufacture.
- the upper layer 2 is comprised of an absorbent material that is able to drain the bottom layer 3, in other words the capillary forces in the upper material shall be greater than the capillary forces in the bottom layer.
- the pores in the upper layer shall be smaller than the pores in the bottom layer.
- the capillaries in the material may be so narrow that the capillary forces will be greater in this layer than in the bottom layer.
- the size of the capillaries of fibrous material can generally be reduced by compression, and it is therefore relatively easy to produce fibrous material that is able to drain the foam layer 3.
- the layer 2 may be comprised of cellulose fluff, although other material may be used, such as gauze or non- woven material.
- the bottom layer 3 will still remain moist, so as to sustain a desirable moist wound environment.
- the bottom layer 3 will not be filled with fluid until the upper layer is saturated.
- the upper layer will therefore preferably be dimensioned to accommodate all or at least the largest part of the fluid that is intended to be absorbed by the dressing, so that the bottom layer can be drained during the full life time of the dressing.
- the bottom layer 3 shall therefore have a thickness which positively distances absorbed exudate from the wound bed while, at the same time, being sufficiently thin to ensure that exudate will come into contact with the upper drainage layer 2 as soon as possible.
- the bottom layer 3 will preferably have a thickness of between 1-2 mm.
- the layers 2 and 3 are held together in some suitable way, for instance by means of a support bandage or an elastic tape or plaster, such as to be anchored to that part of the wearer's body on which the wound is situated.
- a support bandage or an elastic tape or plaster such as to be anchored to that part of the wearer's body on which the wound is situated.
- the bottom layer is preferably made of a foam material of the kind at present used in wound dressings, for instance a polyurethane foam Amrel LO562-6 from Rynel, USA, in which ...% of the pores have a size that is greater than ... ⁇ m.
- the capillary forces of such foam material are so small as to enable all types of fibrous absorbent bodies at present used in wound care to be able to drain such a layer.
- Figure 2 is an electron microscope image of the pore structure of one such material.
- the foam layer 3 is particularly flexible and will adapt to the shapes of all parts of a wearer's body on which they can need to be used. Such layers are therefore particularly suitable for use on large wound surfaces and can be left on the wound for the full duration of the healing process.
- Absorbent bodies comprised of fibrous material are less flexible than bodies of absorbent foam material, and consequently it may be necessary to supplement an inventive gel-coated layer that covers a large wound with several mutually adjacent absorbent bodies of fibrous material in order to ensure " that the two layers of the inventive dressing are in effective contact with each other over the whole area of the wound.
- the plastic foam layer may be comprised of other plastic foams, e.g. viscous foam, EVA- foam, silicon foams that have been made hydrophilic, and so on.
- other absorbent fibrous materials may be used, wherewith the fiber body may be given different capillary sizes by appropriate compression of the material.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9900737A SE513964C2 (en) | 1999-03-01 | 1999-03-01 | Wound dressing comprising a layer of a hydrophilic foam |
SE9900737 | 1999-03-01 | ||
PCT/SE2000/000201 WO2000051650A1 (en) | 1999-03-01 | 2000-02-02 | Wound dressing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1156838A1 true EP1156838A1 (en) | 2001-11-28 |
EP1156838B1 EP1156838B1 (en) | 2005-05-25 |
Family
ID=20414684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00915622A Expired - Lifetime EP1156838B1 (en) | 1999-03-01 | 2000-02-02 | Wound dressing |
Country Status (12)
Country | Link |
---|---|
US (1) | US6486378B1 (en) |
EP (1) | EP1156838B1 (en) |
JP (1) | JP2002537903A (en) |
CN (1) | CN1178702C (en) |
AT (1) | ATE296121T1 (en) |
CA (1) | CA2371905C (en) |
DE (1) | DE60020337T2 (en) |
ES (1) | ES2241591T3 (en) |
PL (1) | PL200521B1 (en) |
RU (1) | RU2236870C2 (en) |
SE (1) | SE513964C2 (en) |
WO (1) | WO2000051650A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013007973A2 (en) | 2011-07-14 | 2013-01-17 | Smith & Nephew Plc | Wound dressing and method of treatment |
US9393158B2 (en) | 2011-08-25 | 2016-07-19 | Brightwake Limited | Non-adherent wound dressing |
US10086107B2 (en) | 2006-04-03 | 2018-10-02 | Brightwake Limited | Adhesive laminates and applications thereof |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002091965A1 (en) * | 2001-05-16 | 2002-11-21 | Susanna Elizabeth Chalmers | Wound dressings and wound treatment compositions |
FR2825017B1 (en) * | 2001-05-28 | 2004-01-16 | Braun Medical | METHOD AND FILM FOR FIXING APPARATUS, PARTICULARLY FOR MEDICAL USE, ON AN EXTERNAL PART OF A LIVING BODY, AND APPARATUS PROVIDED WITH SUCH A FILM |
KR100550807B1 (en) * | 2002-10-29 | 2006-02-09 | 주식회사 바이오폴 | Polyurethane Foam Dressing For Wound Filler And Method For Manufacturing Thereof |
CN100536806C (en) * | 2002-12-31 | 2009-09-09 | Bsn医疗有限责任公司 | Wound dressing with acclimation element for swelling dressing |
CA2510977C (en) | 2002-12-31 | 2012-09-18 | Ossur Hf | Wound dressing comprising an absorbent core with a plurality of receptacles formed therein |
US20050054998A1 (en) * | 2003-09-05 | 2005-03-10 | Poccia John F. | Absorbent article |
JP4566640B2 (en) * | 2004-07-13 | 2010-10-20 | 株式会社瑞光 | Covering material fixing auxiliary material |
DE102005021292B4 (en) * | 2005-05-03 | 2009-11-05 | Universität Rostock | Wound dressing for the treatment of wounds |
CN101395192B (en) | 2006-01-31 | 2012-07-04 | 泰科保健集团有限合伙公司 | Super soft foams |
KR100777908B1 (en) * | 2006-12-19 | 2007-11-28 | 주식회사 바이오폴 | Moisturizing improved polyurethane foam dressing |
ES2344860T3 (en) * | 2007-02-23 | 2010-09-08 | Molnlycke Health Care Ab | FOAM STRUCTURE CONTAINING PARTICLES. |
US20090112141A1 (en) * | 2007-10-31 | 2009-04-30 | Derr Michael J | Method and apparatus for providing a medical dressing |
US8883194B2 (en) * | 2007-11-09 | 2014-11-11 | Honeywell International, Inc. | Adsorbent-containing hemostatic devices |
GB0809131D0 (en) * | 2008-05-20 | 2008-06-25 | Brightwake Ltd | Soft silicones tapes |
US8795718B2 (en) * | 2008-05-22 | 2014-08-05 | Honeywell International, Inc. | Functional nano-layered hemostatic material/device |
ITAR20080022A1 (en) * | 2008-05-26 | 2009-11-27 | Daniele Guidi | DRAINAGE DEVICE, IN PARTICULAR FOR ASPIRATION IN CASE OF SUCTION THERAPIES, FISTULAS, SURGICAL WOUND DEFICIENCIES, DECUBITUS INJURIES, TRAUMAS AND SIMILAR INJURIES. |
DE102008031183A1 (en) | 2008-07-03 | 2010-01-07 | Paul Hartmann Ag | wound dressing |
DE102008031182A1 (en) | 2008-07-03 | 2010-01-07 | Paul Hartmann Ag | Wound dressing with hydrogel matrix |
US8454990B2 (en) * | 2008-08-01 | 2013-06-04 | Milliken & Company | Composite article suitable for use as a wound dressing |
CN102170779A (en) * | 2008-08-28 | 2011-08-31 | 泰科保健集团有限合伙公司 | Antimicrobial foam compositions, articles and methods |
SE533841C2 (en) | 2009-06-15 | 2011-02-01 | Moelnlycke Health Care Ab | Wound dressing with high fluid handling capacity |
GB0919659D0 (en) * | 2009-11-10 | 2009-12-23 | Convatec Technologies Inc | A component for a wound dressing |
EP2338529B1 (en) | 2009-12-24 | 2013-05-29 | Paul Hartmann AG | Hydrogel matrix with improved adhesive characteristics |
US20130116645A1 (en) * | 2011-11-07 | 2013-05-09 | Tyco Healthcare Group Lp | Absorbent Foam Tape And Related Methods Thereof |
KR102067472B1 (en) * | 2012-01-18 | 2020-01-20 | 월드와이드 이노베이티브 헬쓰케어, 인코포레이티드 | Kit and method of modifiable occlusive skin dressing |
DE102012101937A1 (en) * | 2012-03-08 | 2013-09-12 | Ntt New Textile Technologies Gmbh | Process for the production of bandages and bandage |
BR112014029833B1 (en) | 2012-05-29 | 2019-10-01 | 3M Innovative Properties Company | ABSORBENT ARTICLE UNDERSTANDING POLYMERIC AND INTERMEDIATE FOAM |
CN103637876A (en) * | 2013-12-25 | 2014-03-19 | 浙江隆泰医疗科技股份有限公司 | Medical fixing adhesive tape |
CN103637877B (en) * | 2013-12-25 | 2016-08-17 | 浙江隆泰医疗科技股份有限公司 | A kind of foam composite wound dressing |
CN104984417A (en) * | 2015-06-25 | 2015-10-21 | 南阳市汇博生物技术有限公司 | Portable mini vacuum pump negative pressure scar treatment device |
US10918537B2 (en) | 2015-10-05 | 2021-02-16 | 3M Innovative Properties Company | Absorbent article comprising flexible polymeric foam and intermediates |
US20200155355A1 (en) | 2017-06-07 | 2020-05-21 | Kci Usa, Inc. | Wound dressing with odor absorption and increased moisture vapor transmission |
CN107374825A (en) * | 2017-07-21 | 2017-11-24 | 傅书华 | A kind of self-defined adhesive bandage machine |
US11224544B2 (en) | 2017-09-29 | 2022-01-18 | Johnson & Johnson Consumer Inc. | Extensible dressings |
CN110269749B (en) * | 2019-05-22 | 2020-08-14 | 东华大学 | Directional drainage dressing for maintaining proper moisture of wound and preparation method thereof |
DE102019115005A1 (en) | 2019-06-04 | 2020-12-10 | Carl Freudenberg Kg | Skin pad |
CN116212086B (en) * | 2022-11-17 | 2024-08-06 | 青岛海诺生物工程有限公司 | Waterproof breathable band-aid and preparation process thereof |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4733659A (en) * | 1986-01-17 | 1988-03-29 | Seton Company | Foam bandage |
SE456966B (en) * | 1987-03-25 | 1988-11-21 | Moelnlycke Ab | Moisture preserving wound protection |
MY132433A (en) * | 1995-01-10 | 2007-10-31 | Procter & Gamble | Foams made from high internal phase emulsions useful as absorbent members for catamenial pads |
SE505000C2 (en) | 1996-05-14 | 1997-06-09 | Moelnlycke Ab | Wound dressing and manufacturing process therefore |
-
1999
- 1999-03-01 SE SE9900737A patent/SE513964C2/en not_active IP Right Cessation
-
2000
- 2000-02-02 WO PCT/SE2000/000201 patent/WO2000051650A1/en active IP Right Grant
- 2000-02-02 EP EP00915622A patent/EP1156838B1/en not_active Expired - Lifetime
- 2000-02-02 DE DE60020337T patent/DE60020337T2/en not_active Expired - Lifetime
- 2000-02-02 JP JP2000602315A patent/JP2002537903A/en active Pending
- 2000-02-02 US US09/914,428 patent/US6486378B1/en not_active Expired - Lifetime
- 2000-02-02 CN CNB008044430A patent/CN1178702C/en not_active Expired - Lifetime
- 2000-02-02 CA CA002371905A patent/CA2371905C/en not_active Expired - Lifetime
- 2000-02-02 PL PL350137A patent/PL200521B1/en unknown
- 2000-02-02 RU RU2001126402/15A patent/RU2236870C2/en active
- 2000-02-02 ES ES00915622T patent/ES2241591T3/en not_active Expired - Lifetime
- 2000-02-02 AT AT00915622T patent/ATE296121T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0051650A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10086107B2 (en) | 2006-04-03 | 2018-10-02 | Brightwake Limited | Adhesive laminates and applications thereof |
WO2013007973A2 (en) | 2011-07-14 | 2013-01-17 | Smith & Nephew Plc | Wound dressing and method of treatment |
EP3508182A1 (en) | 2011-07-14 | 2019-07-10 | Smith & Nephew PLC | Wound dressing and method of treatment |
US9393158B2 (en) | 2011-08-25 | 2016-07-19 | Brightwake Limited | Non-adherent wound dressing |
Also Published As
Publication number | Publication date |
---|---|
CN1178702C (en) | 2004-12-08 |
SE513964C2 (en) | 2000-12-04 |
CA2371905A1 (en) | 2000-09-08 |
US6486378B1 (en) | 2002-11-26 |
WO2000051650A1 (en) | 2000-09-08 |
DE60020337T2 (en) | 2005-11-10 |
RU2236870C2 (en) | 2004-09-27 |
EP1156838B1 (en) | 2005-05-25 |
ATE296121T1 (en) | 2005-06-15 |
SE9900737L (en) | 2000-09-02 |
JP2002537903A (en) | 2002-11-12 |
ES2241591T3 (en) | 2005-11-01 |
CA2371905C (en) | 2009-06-09 |
SE9900737D0 (en) | 1999-03-01 |
DE60020337D1 (en) | 2005-06-30 |
PL350137A1 (en) | 2002-11-04 |
CN1342092A (en) | 2002-03-27 |
PL200521B1 (en) | 2009-01-30 |
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